V Valous Feeder Fish MFK Member Jan 14, 2009 514 0 0 Elkton,md Apr 18, 2010 #11 2" pipe would work but for a 120gal tank that is a very high flow. You can probally get away with 1.5" instead.
2" pipe would work but for a 120gal tank that is a very high flow. You can probally get away with 1.5" instead.
